<template>
    <p>{{ msg }}</p>
    <ChildCom :title="msg" @change="childChange"/>

</template>

<script>
import ChildCom from './ChildCom.vue';
export default{
    components:{
        ChildCom 
},
    data(){
        return{
            msg:"这是父组件"
        }
    },
    methods:{
        childChange(value){
            console.log('value',value);
            console.log(this.msg)
            this.msg =value
        }
    }
}
</script>